G02B 27/54
Schlieren-optical systems
G02B27/54 (Schlieren-optical systems) appears on 30 US grants and 21 published applications in this corpus.
Search patents in G02B- Granted patents
- 30
- Published applications
- 21
- Assignees
- 27
- Inventors
- 64
- Latest grant
- 5 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 2 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 1 |
| 2015 | 0 | 2 |
| 2016 | 0 | 0 |
| 2017 | 3 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 1 |
| 2020 | 2 | 2 |
| 2021 | 0 | 1 |
| 2022 | 1 | 7 |
| 2023 | 1 | 0 |
| 2024 | 5 | 2 |
| 2025 | 5 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Schlieren system for in-situ/online monitoring of spatter in large-area melt pool5 May 2026US 12,619,069 B2Wuhan University of Science and Technology
- Device for observing a sample by imaging30 Dec 2025US 12,510,471 B2Commissariat A L' Energie Atomique Et Aux Energies Alternatives
- Visualizing catheter irrigation using schlieren images21 Oct 2025US 12,449,672 B2Biosense Webster (Israel) Ltd.
- Method for detecting primary gas flows in flow chambers, use of a gas mixture therefor and gas mixture14 Oct 2025US 12,442,763 B2La Vision GmbH
- Driver monitoring apparatus, vehicle and control method28 Jan 2025US 12,211,294 B2Hyundai Motor Company
- Schlieren system for in-situ/online monitoring of spatter in large-area melt pool9 Oct 2025US 2025/0314878 A1Wuhan University of Science and Technology
- Device for observing a sample by imaging4 Jul 2024US 2024/0219300 A1Commissariat A L' Energie Atomique Et Aux Energies Alternatives
- Visualizing catheter irrigation using schlieren images2 May 2024US 2024/0142791 A1Biosense Webster (Israel) Ltd.
- Method for detecting primary gas flows in flow chambers, use of a gas mixture therefor and gas mixture22 Dec 2022US 2022/0404277 A1LaVision GmbH
- Methods and apparatus for a self-aligned digital projection and reflected glare reduction imaging system22 Sep 2022US 2022/0299437 A1United States of America as represented by the Administrator of NASA
Most cited
By later US patents
- Optical fiber interconnection network including spatial light modulator295US 4,856,863 ATexas Instruments Incorporated · 1989
- Image projector including optical fiber which couples laser illumination to light modulator98US 6,480,634 B1Silicon Light Machines Corporation · 2002
- Method of forming an image and image projection device32US 8,159,733 B2Cambridge Enterprise Limited · 2012
- Interpixel null suppression for optical image bars20US 4,673,953 AXerox Corporation · 1987
- Optical corrector11US 4,964,718 AMcDonnell Douglas Corporation · 1990